CN111434521A - Vehicle seat - Google Patents

Vehicle seat Download PDF

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Publication number
CN111434521A
CN111434521A CN202010040403.4A CN202010040403A CN111434521A CN 111434521 A CN111434521 A CN 111434521A CN 202010040403 A CN202010040403 A CN 202010040403A CN 111434521 A CN111434521 A CN 111434521A
Authority
CN
China
Prior art keywords
seat
cushion
occupant
portions
width direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010040403.4A
Other languages
Chinese (zh)
Inventor
田中大助
胜部健一
金东铉
大木拓磨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Clockwork Co ltd
Original Assignee
Japan Clockwork Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Japan Clockwork Co ltd filed Critical Japan Clockwork Co ltd
Publication of CN111434521A publication Critical patent/CN111434521A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
    • B60N2/02246—Electric motors therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/005—Arrangement or mounting of seats in vehicles, e.g. dismountable auxiliary seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
    • B60N2/0244—Non-manual adjustments, e.g. with electrical operation with logic circuits
    • B60N2/0248—Non-manual adjustments, e.g. with electrical operation with logic circuits with memory of positions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/14—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable rotatable, e.g. to permit easy access
    • B60N2/143—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable rotatable, e.g. to permit easy access taking a position opposite to the original one
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/20—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being tiltable, e.g. to permit easy access
    • B60N2/203—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being tiltable, e.g. to permit easy access taking a position opposite to the original one
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
    • B60N2/2222—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable the back-rest having two or more parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/32—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles convertible for other use
    • B60N2/34—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles convertible for other use into a bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/62—Thigh-rests
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/64—Back-rests or cushions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80—Head-rests
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/838—Tiltable
    • B60N2/853—Tiltable characterised by their adjusting mechanisms, e.g. electric motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/90—Details or parts not otherwise provided for
    • B60N2/995—Lower-leg-rests, e.g. calf-rests
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2205/00—General mechanical or structural details
    • B60N2205/30—Seat or seat parts characterised by comprising plural parts or pieces

Abstract

The present invention provides a vehicle seat, which is provided with: a base fixed to a floor of a vehicle; a pair of seat portions that are disposed so as to face each other when viewed from the seat width direction, are supported by the base portion so as to be tiltable between a horizontal position and an upright position, and have a plurality of cushion portions that are disposed in series and support the body of the occupant; and a hinge mechanism that attaches the pair of seat portions to the base portion so as to be tiltable, and that connects the plurality of cushion portions to each other so as to be pivotable about an axis extending in the seat width direction.

Description

Vehicle seat
Technical Field
The present invention relates to a vehicle seat.
Background
JP 3701105 a describes a seating direction reversal seat device. In this sitting direction reversal seat device, the lower end portion of the backrest portion is tiltably supported by the base portion (base end) of the vehicle seat via the reclining device. The cushion portion is supported via a link mechanism by a cushion base portion that is tiltably supported by a base portion of the vehicle seat. In this seating direction reversing seat device, the seat orientation can be reversed back and forth by tilting the backrest portion to a substantially horizontal arrangement, rotating the link arm of the link mechanism to separate the seat cushion portion from the seat cushion base portion, and then tilting the seat cushion base portion to an upright position.
In the seating direction reversal seat device described in patent document 1, when the seat is reversed in the front-rear direction, the cushion part is separated from the cushion base part supported by the base part, and the link mechanism is exposed. Therefore, since the hand of the operator may be pinched by the link arm of the link mechanism, there is room for improvement in terms of improving safety when changing the seat orientation.
Disclosure of Invention
In view of the above circumstances, an object of the present invention is to provide a vehicle seat that can change the seat orientation and improve the safety when changing the seat orientation.
A vehicle seat according to a 1 st aspect of the present invention includes: a base fixed to a floor of a vehicle; a pair of seat portions that are disposed so as to face each other when viewed from the seat width direction, are supported by the base portion so as to be tiltable between a horizontal position and an upright position, and have a plurality of cushion portions that are disposed in series and support the body of the occupant; and a hinge mechanism that attaches the pair of seat portions to the base portion so as to be tiltable, and that connects the plurality of cushion portions to each other so as to be pivotable about an axis extending in the seat width direction.
In the vehicle seat according to the 1 st aspect of the present invention, the pair of seat portions are disposed so as to face each other when viewed from the seat width direction, and both of the seat portions are supported by the base portion so as to be tiltable between the horizontal position and the upright position with respect to the base portion using the hinge mechanism. Therefore, one of the pair of seat portions is inclined at an angle that can support the lower body of the occupant from the lower side, and the plurality of cushion portions are rotated to form a support surface along the lower body of the occupant, so that the one seat portion becomes the cushion portion. On the other hand, the other of the pair of seat portions is inclined at an angle capable of supporting the upper body of the occupant from the rear side, and the plurality of cushion portions are rotated to form a support surface along the upper body of the occupant, whereby the other seat portion becomes the backrest portion. In this way, by adjusting the positions of the pair of seat portions, the positions of the cushion portion and the backrest portion in the vehicle seat can be reversed, and the seat orientation can be changed.
In the vehicle seat, the seat orientation can be changed only by tilting the pair of seat portions in a predetermined direction with respect to the base portion, and therefore a continuous support surface for supporting the body of the occupant is formed by the cushion portions constituting the pair of seat portions. Thus, in the process of changing the seat orientation, the formation of an unnecessary gap between the support surface of the seat portion and the base portion is suppressed, and a situation in which a part of the body of the occupant is sandwiched between the seat portion and the base portion is prevented.
A vehicle seat according to a 2 nd aspect of the present invention is the vehicle seat according to the 1 st aspect, wherein the plurality of cushion portions include: a lower cushion part having one end supported by the base part so as to be tiltable relative to the base part, the lower cushion part being capable of supporting a lower part of a hip or a back of an occupant; an intermediate cushion portion having one end rotatably supported by the other end of the lower cushion portion and capable of supporting an upper portion of a shin portion or a back portion of the occupant; and an upper cushion part, one end of which is rotatably supported by the other end of the middle cushion part, and which can support the feet or the head of the occupant.
In a vehicle seat according to a 2 nd aspect of the present invention, a pair of seat portions includes a lower cushion portion, an intermediate cushion portion, and an upper cushion portion that are arranged in series. When one seat portion is a cushion portion, the hip portion to the foot portion of the occupant is supported by the seat portion, and when the other seat portion is a backrest portion, the back portion to the head portion of the occupant is supported by the seat portion. In this way, by adopting a configuration in which the seat portion includes 3 cushion portions, the head to the foot portions of the occupant can be supported, the occupant can be seated in a relaxed posture, and the comfort during traveling is improved.
A vehicle seat according to a 3 rd aspect of the present invention is the structure according to the 2 nd aspect, wherein the lower cushion portion and the intermediate cushion portion are pivotably coupled by a double hinge mechanism in which one rotation shaft provided at the other end of the lower cushion portion and another rotation shaft provided at the one end of the intermediate cushion portion are coupled via a link.
In the vehicle seat according to the 3 rd aspect of the present invention, since the lower cushion portion and the intermediate cushion portion are coupled by the double hinge mechanism, the thicknesses of the lower cushion portion and the intermediate cushion portion can be absorbed by the double hinge mechanism, and both can be coupled so as to be relatively rotatable. Therefore, a mat having a thickness can be disposed at the connection portion between the lower cushion portion and the intermediate cushion portion. Thus, even if the lower cushion portion and the intermediate cushion portion of the seat portion are disposed at positions separated from the base portion, the body of the seated occupant can be stably supported, and the occupant restraining force of the seat portion can be increased.
A vehicle seat according to a 4 th aspect of the present invention is the vehicle seat according to the 2 nd aspect, wherein the upper cushion portion includes: the seat device includes a plate-shaped bottom frame capable of supporting the feet of an occupant at a footrest position, and a plate-shaped revolving frame capable of supporting the head of the occupant at a headrest position, and the bottom frame and the revolving frame are coupled to each other so as to be pivotable about an axis in the seat width direction.
In the vehicle seat according to the 4 th aspect of the present invention, the revolving frame is pivoted relative to the base frame, so that the feet of the occupant can be supported by the base frame at the footrest position of the upper cushion portion, and the head of the occupant can be supported by the revolving frame at the headrest position of the upper cushion portion. Thus, even when the seat orientation is changed by reversing the inclination angles of the pair of seat portions, the portions where the foot portions contact the head portion can be distinguished and used in the upper cushion portion, so that the cleanness can be maintained and the convenience of the occupant can be improved.
A vehicle seat according to a 5 th aspect of the present invention is the vehicle seat according to the 1 st aspect, wherein the hinge mechanism includes: a plurality of motors as drive sources; and a plurality of shafts that are rotated in the forward and reverse directions by the driving force from the plurality of motors and are arranged with the seat width direction as the axial direction.
In the vehicle seat according to claim 5 of the present invention, the rotation operation between the plurality of cushion portions arranged in series is performed using a plurality of shafts that rotate forward and backward by receiving the driving force from the plurality of motors. This allows the plurality of cushion portions to be smoothly moved, and prevents the occupant from feeling uncomfortable even if the shape of the seat is changed in a state where the occupant is seated on the vehicle seat.
A vehicle seat according to claim 6 of the present invention is the vehicle seat according to claim 1, further comprising a control device that actuates the hinge mechanism to a state in which the hinge mechanism is selected from a plurality of modes stored in advance.
In the vehicle seat according to claim 6 of the present invention, the control device actuates the hinge mechanism to be in a state selected from a plurality of modes stored in advance. Therefore, the occupant can select any one of the plurality of modes when adjusting the sitting posture, and thus the sitting posture can be adjusted very easily.
As described above, the vehicle seat according to the present invention can change the seat orientation and can improve the safety when changing the seat orientation.
Drawings
Exemplary embodiments of the present invention will be described in detail based on the following drawings, in which:
fig. 1 is a perspective view showing a state in which an upper cushion portion of a seat portion disposed on a front side in a seat front-rear direction is set to a footrest position and an upper cushion portion of a seat portion disposed on a rear side in the seat front-rear direction is set to a headrest position in a vehicle seat according to an embodiment of the present invention;
fig. 2 is a perspective view corresponding to fig. 1 showing a skeleton member of the vehicle seat;
fig. 3 is a perspective view showing a frame member of the vehicle seat as viewed from the seat rear side;
fig. 4 is an exploded perspective view for explaining a structure of a seat portion of the vehicle seat;
fig. 5 is a schematic side view showing a vertical position of a seat portion of the vehicle seat with a solid line and a horizontal position with a two-dot chain line;
fig. 6 is a block diagram showing a control system of the vehicle seat;
fig. 7 is a schematic side view showing a state in which the vehicle seat is set to a driving mode;
fig. 8 is a schematic side view showing a state in which the vehicle seat is set to a seat-facing mode by a solid line, and a state in which the vehicle seat is set to a driving mode by a two-dot chain line;
fig. 9 is a schematic side view showing a state in which the vehicle seat is set to a relaxation mode;
fig. 10 is a schematic side view showing a state in which the vehicle seat is set to a sleep mode;
fig. 11 is a schematic side view showing a state in which the vehicle seat is set to the edema improvement mode;
fig. 12 is a schematic side view showing a state in which the vehicle seat is set to a child mode;
fig. 13 is a schematic side view showing a state in which the vehicle seat is set to a cargo mode; and
fig. 14 is a schematic side view showing a state in which the vehicle seat is set to the storage mode.
Detailed Description
Hereinafter, a vehicle seat 10 according to an embodiment of the present invention will be described with reference to fig. 1 to 14, where arrow FR appropriately shown in the drawings indicates the seat front side of the vehicle seat 10, arrow UP indicates the seat upper side, and arrow L H indicates the seat left side (seat width direction side). in the present embodiment, unless otherwise mentioned, the seat front side, the seat upper side, and the seat left side of the vehicle seat 10 correspond to the vehicle front side, the vehicle upper side, and the vehicle left side of a vehicle (automobile) in which the vehicle seat 10 is mounted, respectively.
As shown in fig. 1 to 7, the vehicle seat 10 includes: a base portion 12 that constitutes a lower portion of the vehicle seat 10; and a pair of seat portions 32 supported by the base portion 12 so as to be tiltable with respect thereto. The pair of seat portions 32 include a lower cushion portion 34, an intermediate cushion portion 36, and an upper cushion portion 38, which are arranged in series, and are coupled to each other by a hinge mechanism 72 inside the seat portions 32. Further, the vehicle seat 10 includes an ECU 140 (see fig. 6) as a control device that controls the hinge mechanism 72. Hereinafter, each configuration will be described.
(with respect to the base 12)
As shown in fig. 1 to 4, the base portion 12 is fixed to a floor of a vehicle, not shown, via a slide mechanism 14. The slide mechanism 14 has a pair of left and right slide rails 16. The left and right slide rails 16 are substantially elongated in the longitudinal direction of the seat, and are arranged side by side in the seat width direction. The slide rails 16 include a lower rail 18 and an upper rail 20.
The lower rail 18 is formed in a substantially C-shape in cross section that opens toward the seat upper side when viewed from the seat front, and extends in the seat front-rear direction. The front end and the rear end of the lower rail 18 are fixed to the floor of the vehicle. The upper rail 20 is supported slidably in the seat front-rear direction with respect to the lower rail 18. The slide mechanism 14 is configured to slide the upper rail 20 in the seat front-rear direction with respect to the lower rail 18 by the driving force of the slide motor 22 shown in fig. 1, 2, and 4.
The base 12 includes: a plate 24 fixed to the upper rail 20; and a pair of support members 26 erected from both sides of the plate 24 in the seat width direction toward the seat upper side. The plate 24 is formed by press-forming a metal plate, for example, and includes: an upper surface portion 24A formed in a substantially rectangular shape when viewed from above the seat; and side surface portions 24B extending from both ends in the seat width direction of the upper surface portion 24A toward the seat lower side. A fixed flange 24C extending in a substantially horizontal direction is provided at a lower end portion of the side surface portion 24B, and the upper rail 20 and the fixed flange 24C are fixed by a fastener (no reference numeral). Thus, the base 12 is fixed to a floor (not shown) of the vehicle via a slide mechanism. The base portion 12 may be configured such that the fixed flange portion 24C is directly fixed to the floor of the vehicle.
On the other hand, the pair of support members 26 are formed by press-forming a metal plate, for example, and are erected from both sides of the upper surface portion 24A of the plate 24 in the seat width direction toward the seat upper side. The support member 26 includes: a base end portion 26A extending in a substantially horizontal direction; and a rising portion 26B that rises upward from one end of the base end portion 26A toward the seat side. The base end portion 26A is fastened to the upper surface portion 24A using a plurality of bolts 28 and nuts (not shown). The rising portion 26B is formed into a substantially rectangular shape having the seat front-rear direction as the longitudinal direction when viewed from the seat width direction, and a pair of connecting portions 30 to which the 1 st hinge portion 74 of the hinge mechanism 72 described later is connected are provided on both sides in the seat front-rear direction.
(with respect to the pair of seat portions 32)
As shown in fig. 1 and 5, the pair of seat portions 32 are attached to the base portion 12 via the 1 st hinge portion 74 of the hinge mechanism 72 described later, and are supported so as to be tiltable with respect to the base portion 12. Further, of the pair of seat portions 32, the seat portion 32A disposed on the front side in the seat front-rear direction and the seat portion 32B disposed on the rear side in the seat front-rear direction are disposed so as to face each other when viewed from the seat width direction. That is, the seat portions 32A and 32B are configured to be symmetrical in structure with respect to the base portion 12.
Each of the seat portions 32A and 32B includes: the lower cushion portion 34, the intermediate cushion portion 36, and the upper cushion portion 38, which support the body of the occupant P seated in the vehicle seat 10, are configured to be arranged in series in this order from the base end portion to the tip end portion of the seat portion 32. The lower cushion portion 34, the intermediate cushion portion 36, and the upper cushion portion 38 are coupled by a hinge mechanism 72 described later. The lower cushion portion 34, the intermediate cushion portion 36, and the upper cushion portion 38 correspond to "a plurality of cushion portions" in the present invention.
(with respect to the lower buffer portion 34)
As shown in fig. 2 to 4, the lower cushion portion 34 has a lower frame 40 constituting a frame (skeleton member) of the lower cushion portion 34. The lower frame 40 has a pair of left and right lower frames 42. The left and right lower side frames 42 are formed by press forming a metal plate, for example, and have a long shape with a direction orthogonal to the seat width direction as the longitudinal direction, and are arranged with the seat width direction as the plate thickness direction. One end in the longitudinal direction of the left and right lower frames 42 is rotatably coupled to the coupling portion 30 of the base portion 12 via a 1 st hinge portion 74 of a hinge mechanism 72 described later. The other end in the longitudinal direction of the left and right lower frames 42 is rotatably coupled to the intermediate buffer 36 via a 2 nd hinge portion 84 of a hinge mechanism 72 described later.
The lower frame 40 includes a pair of support frames 44. The pair of support frames 44 are formed of, for example, a metal pipe material, and are arranged in parallel with the seat width direction as the axial direction (longitudinal direction). The pair of support frames 44 are coupled to the left and right lower frames 42 so that both longitudinal ends thereof are stretched therebetween.
As shown in fig. 1, a lower cushion 46 is provided on the seat front side of the lower frame 40. The under-pad 46 is made of a foam material such as urethane, and is covered with a skin 48. A lower cushion pan 46A formed by press-forming a metal plate, for example, is provided on the seat back side of the lower cushion 46. The lower cushion pan 46A is fixed to the lower frame 40 via a fixing frame 47 fixed to the support frame 44. The lower cushion portion 34 configured as described above is configured to support the body of the occupant P seated in the vehicle seat 10 by the under-pad 46 having the lower cushion pan 46A.
(with respect to the intermediate buffer 36)
The intermediate cushion portion 36 has an intermediate frame 50 constituting a frame (skeleton member) of the intermediate cushion portion 36. The intermediate frame 50 has a pair of left and right intermediate side frames 52. The left and right middle side frames 52 are formed in a hollow rectangular box shape, and are connected in the seat width direction by one connecting frame 54 arranged with the seat width direction being the longitudinal direction. The coupling frame 54 is formed of, for example, a metal pipe. The seat width direction outer side surfaces of the left and right intermediate side frames 52 are rotatably connected to the lower side frame 42 via a 2 nd hinge portion 84 of a hinge mechanism 72 described later. The seat width direction inner side surfaces of the left and right intermediate side frames 52 are rotatably connected to the upper cushion portion 38 via a 3 rd hinge portion 116 of a hinge mechanism 72 described later.
As shown in fig. 1, an intermediate pad 56 is provided on the seat front side of the intermediate frame 50. The intermediate pad 56 is made of a foam material such as urethane, and is covered with the skin 48. An intermediate cushion pan 56A formed by press-forming a metal plate, for example, is provided on the seat back side of the intermediate pad 56. The intermediate cushion pan 56A is fixed to the seat front side surface of the intermediate side frame 52. The intermediate cushion portion 36 configured as described above is configured to support the body of the occupant P seated in the vehicle seat 10 by the intermediate pad 56 having the intermediate cushion pan 56A.
(with respect to the upper buffer part 38)
The upper cushion portion 38 has an upper frame 58 constituting a frame (skeleton member) of the upper cushion portion 38. The upper frame 58 includes: a bottom frame 60 disposed on the seat back side of the upper frame 58; and a rotating frame 62 supported to be rotatable with respect to the base frame 60. The bottom frame 60 is formed by press-forming a metal plate, for example, and has a substantially triangular plate shape. Further, a pair of coupling brackets 64 extending toward the intermediate cushion 36 are provided on the base end portion side (the bottom portion of the triangle) of the bottom frame 60. The connecting bracket 64 is formed in an elongated shape with the seat width direction as the plate thickness direction, and a connecting portion 30 to which a 3 rd hinge portion 116 of a hinge mechanism 72 described later is connected is provided at a distal end portion. The bottom frame 60 is rotatably supported by the middle side frame 52 of the middle cushion portion 36 via the 3 rd hinge portion 116. On the other hand, on the top end side (triangular top corner portion) of the base frame 60, a conversion hinge portion 128 of a hinge mechanism 72 described later is provided between a pair of fixed plates 66 erected toward the top end side of the base frame 60.
The rotating frame 62 is formed into a substantially triangular plate shape similarly to the base frame 60. A support plate 68 standing toward the distal end of the rotating frame 62 is disposed on the distal end side (the triangular distal end portion) of the rotating frame 62, and the rotating frame 62 and the conversion hinge portion 128 are coupled via the support plate 68. Thus, the base frame 60 and the revolving frame 62 are pivotably coupled to each other via a conversion hinge section 128 of a hinge mechanism 72 described later. An upper pad 70 made of a foam material such as urethane is disposed on one surface of the rotating frame 62, and is covered with the skin 48.
In the upper cushion 38 configured as described above, the upper cushion 38 can be switched between the "headrest position" and the "footrest position" by rotating the rotating frame 62 relative to the base frame 60. The "headrest position" is a state in which the base frame 60 and the revolving frame 62 are overlapped, as shown by the upper cushion portion 38 of the seat portion 32B of the vehicle seat 10 disposed on the seat front-rear direction rear side in fig. 1. In this state, the upper pad 70 of the rotating frame 62 is disposed on the seat front side of the upper cushion portion 38. Then, the head of the occupant P is supported by the upper cushion 70 (see fig. 7, 9 to 11). On the other hand, the "footrest position" is a state in which the rotating frame 62 is rotated in the separating direction with respect to the base frame 60, as shown by the upper cushion portion 38 of the seat portion 32A disposed opposite to the seat portion 32B in fig. 1. In this state, the bottom frame 60 is disposed on the seat front side of the upper cushion 38. Then, the bottom frame 60 supports the legs of the passenger P (see fig. 7, 9 to 11).
(with respect to hinge mechanism 72)
As shown in fig. 2 to 6, the hinge mechanism 72 includes a 1 st hinge portion 74, a 2 nd hinge portion 84, a 3 rd hinge portion 116, a conversion hinge portion 128, and an ECU 140.
(about the 1 st hinge part)
As shown in fig. 2 to 4, the 1 st hinge portion 74 is disposed between and connects the base portion 12 and the seat portion 32 (the lower cushion portion 34) of the vehicle seat 10. The 1 st hinge part 74 employs a known power circular reclining mechanism including: a 1 st motor 76 serving as a drive source; a 1 st shaft 78 serving as an output shaft of the 1 st motor 76; and a pair of pivoting brackets 80 that are coupled to each other in the seat width direction by the 1 st shaft 78 and are rotatably supported by the base 12.
The 1 st motor 76 is fastened and fixed to the seat width direction inner side of one turning bracket 80 using a motor bolt 77 and a nut not shown. The 1 st shaft 78 is disposed with the seat width direction as the axial direction, and both end portions in the axial direction are fixed to a pair of rotating brackets 80. The pair of pivoting brackets 80 are formed by press-forming a metal plate, for example, and are disposed with the seat width direction being the plate thickness direction, and the lower end portions thereof are rotatably supported by the connecting portions 30 provided on both the left and right sides of the base portion 12 in the seat width direction. Upper end portions of the pair of pivot brackets 80 are fastened and fixed to one end in the longitudinal direction of the pair of left and right lower frames 42 of the lower cushion portion 34 using a pair of bolts 82 and a pair of nuts, not shown.
According to the above configuration, the 1 st hinge part 74 is actuated by the 1 st motor 76, and the 1 st shaft 78 as an output shaft rotates forward and backward. The turning bracket 80 is turned relative to the base 12 by the turning movement of the 1 st shaft 78. Thus, the lower cushion portion 34 coupled to the base portion 12 via the pivot bracket 80 is configured to be tilted with respect to the base portion 12 so as to pivot about an axis along the seat width direction (see the direction of arrow R1 in fig. 7).
(about the 2 nd hinge part 84)
The 2 nd hinge portion 84 is disposed between and connects the lower cushion portion 34 and the intermediate cushion portion 36 of the seat portion 32. The 2 nd hinge part 84 includes: a pair of links 86 disposed on both sides of the seat portion 32 in the seat width direction; a lower reclining mechanism 88 provided at one end of the link 86; and an upper reclining mechanism 90 provided at the other end of the link 86. The link 86 is formed by press-forming a metal plate, for example, and has a long shape with a direction orthogonal to the seat width direction as a longitudinal direction, and is disposed with the seat width direction as a plate thickness direction. Further, the connecting portion 30 connected to the lower reclining mechanism 88 and the upper reclining mechanism 90 is provided at both longitudinal end portions of the link 86.
The lower reclining mechanism 88 is a well-known power circular reclining mechanism, as in the hinge unit 1 described above. The lower reclining mechanism 88 includes: a 2 nd motor 92 serving as a drive source; a 2 nd shaft 94 serving as an output shaft of the 2 nd motor 92; and a pair of pivoting brackets 96 coupled in the seat width direction by a 2 nd shaft 94. The pair of pivot brackets 96 are formed by press forming a metal plate, for example, and are arranged with the seat width direction as the plate thickness direction. One ends of the pair of pivot brackets 96 are fastened and fixed to the other ends in the longitudinal direction of the pair of left and right lower frames 42 of the lower cushion portion 34 using a pair of bolts 97 and a pair of nuts, not shown. On the other hand, the other ends of the pair of pivot brackets 96 are pivotably supported by the coupling portions 30 provided at the one ends in the longitudinal direction of the pair of right and left links 86. In addition, the 2 nd motor 92 is fastened and fixed to the inside in the seat width direction by a motor bolt 93 and a nut, not shown, in one of the pair of rotating brackets 96.
The upper recliner mechanism 90 is a well-known powered circular recliner mechanism similar to the lower recliner mechanism 88 described above. The upper reclining mechanism 90 includes: a 3 rd motor 98 as a driving source; a 3 rd shaft 100 which becomes an output shaft of the 3 rd motor 98; and a pair of pivoting brackets 104 coupled to each other in the seat width direction via a 3 rd shaft 100. The pair of pivot brackets 104 are formed by press forming a metal plate, for example, and are arranged with the seat width direction as the plate thickness direction. One end of each of the pair of pivot brackets 104 is fastened and fixed to the outer side surfaces of the left and right intermediate side frames 52 of the intermediate cushion portion 36 in the seat width direction using 3 bolts 108 and 3 nuts, not shown. On the other hand, the other ends of the pair of pivot brackets 104 are pivotably supported by the coupling portions 30 provided at the other ends in the longitudinal direction of the pair of right and left links 86. In addition, the 3 rd motor 98 is fastened and fixed to the inside in the seat width direction by a motor bolt 99 and a nut, not shown, in one of the pair of rotating brackets 104.
According to the above configuration, the 2 nd hinge portion 84 is actuated by the 2 nd motor 92, and the 2 nd shaft 94 as an output shaft thereof rotates forward and backward. The link 86 coupled to the pivot bracket 96 is pivoted relative to the lower cushion portion 34 by the pivoting movement of the 2 nd shaft 94 (see arrow R2 in fig. 7).
In addition, the 3 rd shaft 100, which is an output shaft thereof, is rotated forward and backward by the actuation of the 3 rd motor 98. The turning bracket 104 is subjected to the turning motion of the 3 rd shaft 100 and turns relative to the link 86. Thus, the intermediate cushion portion 36 coupled to the link 86 via the pivot bracket 104 is configured to pivot about an axis along the seat width direction with respect to the link 86 (see the direction of arrow R3 in fig. 7).
As described above, the 2 nd hinge portion 84 employs a double hinge mechanism in which the 2 nd shaft 94, which is one rotation shaft, provided at one end of the lower cushion portion 34 and the 3 rd shaft 100, which is the other rotation shaft, provided at one end of the intermediate cushion portion 36 are connected via the link 86. Thus, the thicknesses of the lower cushion portion 34 and the intermediate cushion portion 36 can be absorbed by the 2 nd hinge portion 84, and the intermediate cushion portion 36 can be rotated about the axis in the seat width direction with respect to the lower cushion portion 34.
(about the 3 rd hinge part 116)
The 3 rd hinge portion 116 is disposed between and connects the middle cushion portion 36 and the upper cushion portion 38 of the seat portion 32. The 3 rd hinge portion 116 employs a known power recliner mechanism, as in the 1 st hinge portion 74. The 3 rd hinge portion 116 includes: a 4 th motor 118 serving as a drive source; a 4 th shaft 120 serving as an output shaft of the 4 th motor 118; and a pair of pivoting brackets 122 coupled in the seat width direction by a 4 th shaft 120.
The pair of pivot brackets 122 are formed by press forming a metal plate, for example, and are arranged with the seat width direction as the plate thickness direction. One ends of the pair of pivot brackets 122 are fastened and fixed to the seat width direction inner side surfaces of the left and right middle side frames 52 of the middle cushion portion 36 using 3 bolts 124 and 3 nuts, not shown. On the other hand, the other ends of the pair of pivotal brackets 122 are pivotally supported by the linking portions 30 of the pair of left and right linking brackets 64 provided on the bottom frame 60 of the upper cushion 38. In addition, the 4 th motor 118 is fastened and fixed to the inside in the seat width direction in one of the pair of rotating brackets 122 using a motor bolt 126 and a nut not shown.
According to the above configuration, the 3 rd hinge portion 116 is actuated by the 4 th motor 118, and the 4 th shaft 120 as an output shaft rotates forward and backward. The turning bracket 122 is turned with respect to the intermediate buffer 36 by the turning motion of the 4 th shaft 120. Thus, the upper cushion portion 38 coupled to the intermediate cushion portion 36 via the pivot bracket 122 is configured to be tilted with respect to the intermediate cushion portion 36 about an axis along the seat width direction (see the direction of arrow R4 in fig. 7).
(about the conversion hinge part 128)
As shown in fig. 4, the conversion hinge portion 128 rotatably connects the base frame 60 and the rotating frame 62 of the upper cushion portion 38. The conversion hinge section 128 includes: a 5 th motor 130 serving as a driving source, a pinion gear 132 serving as an output shaft of the 5 th motor 130, a sector gear 134 meshing with the pinion gear 132, and a gear holder 136 fixedly supporting the sector gear 134. The 5 th motor 130 is fastened and fixed to the inside in the seat width direction of one fixed plate 66 erected on the distal end portion of the base frame 60 using a motor bolt 131 and a nut not shown.
A pinion gear 132 as an output shaft of the 5 th motor 130 is disposed with the seat width direction as an axial direction. Further, a gear formed at the tip of the pinion gear 132 meshes with a gear of the sector gear 134.
The sector gear 134 is disposed in the seat width direction as an axial direction, and is fixedly supported by a gear holder 136. The gear holder 136 is formed by press-forming a metal plate, for example, and is fastened and fixed to the support plate 68 of the rotating frame 62 using a plurality of bolts 138 and a plurality of nuts, not shown. One ends of the sector gear 134 and the gear bracket 136 are rotatably supported by the pair of fixing plates 66 of the base frame 60 using the pair of pins 139.
According to the above configuration, the 5 th motor 130 is activated in the conversion hinge portion 128, and the sector gear 134 rotates forward and backward via the pinion gear 132 as the output shaft. The gear bracket 136 is rotated relative to the base frame 60 by the rotational movement of the sector gear 134. Thereby, the rotating frame 62 coupled to the base frame 60 via the gear holder 136 is configured to rotate about an axis along the seat width direction (see the direction of arrow R5 in fig. 7).
The vehicle seat 10 configured as described above is configured such that the seat portion 32 is supported so as to be tiltable with respect to the base portion 12 between a "vertical position" indicated by a solid line in fig. 5 and a "horizontal position" indicated by a two-dot chain line in fig. 5 under the control of the ECU 140 described below. The "vertical position" refers to a state in which the seat portion 32 extends in a substantially vertical direction along the center line C of the base portion 12 in the seat up-down direction when the lower cushion portion 34, the intermediate cushion portion 36, and the upper cushion portion 38 of the seat portion 32 are linearly arranged. On the other hand, the "horizontal position" refers to a state in which the seat portion 32 extends in a substantially horizontal direction.
In the vehicle seat 10, the seat shape can be changed to a plurality of modes described below by rotating the lower cushion portion 34, the intermediate cushion portion 36, and the upper cushion portion 38 of the seat portion 32 about an axis extending in the seat width direction.
(with respect to ECU 140)
An ECU 140(Electronic Control Unit) shown in fig. 6 is constituted by a microcomputer in which a CPU, a ROM, a RAM, and an I/O (input/output interface) are connected to a bus. The 1 st motor 76, the 2 nd motor 92, the 3 rd motor 98, the 4 th motor 118, and the 5 th motor 130 are electrically connected to the I/O of the ECU 140. Further, an operation unit 142 provided near the vehicle seat 10 is electrically connected to the I/O of the ECU 140.
The operation unit 142 is provided with a mode selection switch in addition to switches for driving the 1 st motor 76, the 2 nd motor 92, the 3 rd motor 98, the 4 th motor 118, and the 5 th motor 130. The mode selection switch is a switch for selecting any of a plurality of (various) modes stored in advance in the ROM of the ECU 140. The ECU 140 is configured to control the driving of the 1 st motor 76, the 2 nd motor 92, the 3 rd motor 98, the 4 th motor 118, and the 5 th motor 130 in accordance with the mode selected by the mode selection switch.
The plurality of modes include a driving mode shown in fig. 7, a sitting mode shown by a solid line in fig. 8, a relaxing mode shown in fig. 9, a sleeping mode shown in fig. 10, an edema alleviating mode shown in fig. 11, a child mode shown in fig. 12, a cargo mode shown in fig. 13, and a storage mode shown in fig. 14.
The driving mode shown in fig. 7 is a basic mode of the vehicle seat 10, and is a configuration in which the vehicle seat 10 is in a state of being in the driving mode at all times. In this driving mode, the seat orientation of the vehicle seat 10 is set forward, and coincides with the traveling direction of the vehicle (hereinafter, referred to as "forward seat position"). That is, the seat portion 32A disposed on the front side in the seat front-rear direction becomes a cushion portion extending in the substantially seat front-rear direction, and the seat portion 32B disposed on the rear side in the seat front-rear direction becomes a backrest portion extending in the substantially seat up-down direction. In this state, the lower cushion portion 34 of the seat portion 32A supports the buttocks of the occupant P1, the intermediate cushion portion 36 supports the shin portion of the occupant P1, and the upper cushion portion 38 is set to the "footrest position" to support the foot portion of the occupant P1. The lower cushion portion 34 of the seat portion 32B supports the lower portion of the back of the occupant P1, the intermediate cushion portion 36 supports the upper portion of the back of the occupant P1, and the upper cushion portion 38 is set to the "headrest position" to support the head of the occupant P1. In this driving mode, the occupant P1 seated in the vehicle can be seated in a standard seating posture.
In the seat alignment mode shown by the solid line in fig. 8, the seat orientation of the vehicle seat 10 is set to be rearward and opposite to the traveling direction of the vehicle (hereinafter, referred to as "rearward seat position"). That is, the seat portion 32A disposed on the seat front side becomes a backrest portion extending substantially in the seat up-down direction, and the seat portion 32B disposed on the seat rear side becomes a cushion portion extending substantially in the seat front-rear direction. In this state, the lower cushion portion 34 of the seat portion 32A supports the lower portion of the back of the occupant P1, the intermediate cushion portion 36 supports the upper portion of the back of the occupant P1, and the upper cushion portion 38 is set to the "headrest position" to support the head of the occupant P1. The seat unit 32B is configured such that the lower cushion portion 34 supports the buttocks of the occupant P1, the middle cushion portion 36 supports the shin portion of the occupant P1, and the upper cushion portion 38 is set to the "footrest position" to support the foot portion of the occupant P1. In the pair-seat mode, for example, the occupant P1 seated in the driver's seat of the vehicle during automatic driving can be seated in a face-to-face relationship with the occupant in the rear seat.
In the relaxing mode shown in fig. 9, the seat portion 32 on the side of the backrest portion is greatly inclined in the seat front-rear direction with respect to the center line C of the base portion 12 in the vehicle vertical direction when viewed from the seat width direction. Thus, the occupant P1 can be seated in a comfortable posture. In fig. 9, the vehicle seat 10 is set to the "forward seat position", and the seat portion 32B on the seat rear side becomes the backrest portion and is largely inclined toward the seat rear side with respect to the center line C as viewed from the seat width direction. However, the relaxation mode may be selected when the vehicle seat 10 is set to the "rearward seat position". At this time, although not shown, the seat portion 32A on the seat front side is configured to be largely inclined toward the seat front side with respect to the center line C when viewed from the seat width direction.
The sleep mode shown in fig. 10 is a state in which both the seat portions 32A and 32B are tilted to the "horizontal position". In this sleep mode, the support surface that supports the body of the occupant P1 is formed flat in a substantially horizontal direction, and the occupant P1 can take a posture during sleep. Thus, for example, an occupant in the driver's seat during automatic driving can reach the destination while sleeping. Alternatively, the occupant of the rear seat can sleep in a comfortable posture. Although fig. 10 illustrates the sleep mode when the vehicle seat 10 is set to the "forward seat position", the sleep mode may be selected when the vehicle seat 10 is set to the "rearward seat position".
The edema improvement mode shown in fig. 11 is basically the same seat shape as the above-described sleep mode, but the lower cushion portion 34 of the seat portion 32A serving as the cushion portion is slightly inclined to the seat upper side than the horizontal direction, and the feet of the occupant P are lifted to the seat upper side than the upper body. The intermediate cushion portion 36 and the upper cushion portion 38 of the seat portion 32A extend in a substantially horizontal direction. In the edema improvement mode, for example, when the vehicle is traveling for a long time, the lower body is seated in a posture of being lifted upward in the seat up-down direction from the upper body, so that the edema of the lower body of the occupant P can be improved. Although fig. 11 illustrates the edema improvement mode when the vehicle seat 10 is set to the "forward seat position", the edema improvement mode may be selected when the vehicle seat 10 is set to the "rearward seat position".
The child mode shown in fig. 12 is a separate seat formed by facing the seat portions 32A and 32B, and allows the child occupant P2 to sit on it. In this child mode, the lower cushion portions 34 of the seat portions 32A and 32B are disposed obliquely upward of the seat when viewed in the seat width direction, and support the shin portions of the occupant P2. The intermediate cushion portions 36 of the seat portions 32A and 32B are arranged in a substantially horizontal direction, and constitute cushion portions that support the buttocks of the occupant P2. The upper cushion portions 38 of the seat portions 32A and 32B are arranged obliquely to the seat upper side when viewed in the seat width direction, and constitute a backrest portion that supports the back of the occupant P2.
In the cargo mode shown in fig. 13, the lower cushion portions 34 of the seat portions 32A, 32B are arranged in a substantially horizontal direction, and the intermediate cushion portion 36 and the upper cushion portion 38 are arranged in a substantially vertical direction. In this cargo mode, when a vehicle travels with a cargo placed on the vehicle seat 10, the lower cushion portions 34 of the seat portions 32A and 32B form a flat placement surface, and the cargo can be stably transported. The intermediate cushion portion 36 and the upper cushion portion 38 are disposed on both sides of the lower cushion portion 34 of the seat portions 32A, 32B in the seat front-rear direction in the substantially vertical direction. Therefore, the intermediate cushion portion 36 and the upper cushion portion 38 serve as barriers at the time of emergency start or emergency stop of the vehicle, and the cargo can be prevented from rolling off from the vehicle seat. In this respect, the cargo can be stably transported.
In the storage mode shown in fig. 14, the seat portions 32A and 32B are set to the "vertical position". In this storage mode, when the occupant is not seated on the vehicle seat 10, the vehicle seat can be stored in a compact size in the seat front-rear direction. Therefore, for example, by setting the vehicle seat 10 disposed in the rear seat to the storage mode, it is possible to increase the cargo capacity of the rear seat in the vehicle compartment or enlarge the cargo compartment of the hatchback type vehicle.
(action and Effect)
Next, the operation and effect of the present embodiment will be described.
In the vehicle seat 10 configured as described above, the pair of seat portions 32 are supported by the base portion 12 fixed to the floor of the vehicle body so as to be tiltable. Further, the lower cushion portion 34, the intermediate cushion portion 36, and the upper cushion portion 38 are arranged in series in this order from the base end portion to the tip end portion of the seat portion 32 in each seat portion 32.
The pair of seat portions 32 are disposed facing each other when viewed from the seat width direction, and can tilt between a horizontal position and an upright position with respect to the base portion 12 using the hinge mechanism 72. Therefore, one of the pair of seat portions 32 can be tilted at an angle that can support the lower body of the occupant P from the lower side, and the lower cushion portion 34, the intermediate cushion portion 36, and the upper cushion portion 38 can be rotated to form a support surface along the lower body of the occupant P. Thus, the one seat portion 32 becomes a cushion portion (see the seat portion 32A shown in fig. 1 and 7). On the other hand, the other of the pair of seat portions 32 is inclined at an angle that can support the upper body of the occupant P from the rear side, and the lower cushion portion 34, the intermediate cushion portion 36, and the upper cushion portion 38 can be rotated to form a support surface along the upper body of the occupant P. Thus, the other seat portion 32 serves as a backrest portion (see a seat portion 32B shown in fig. 1 and 7). In this manner, by adjusting the positions of the pair of seat portions 32, the positions of the cushion portion and the backrest portion in the vehicle seat 10 can be reversed, and the seat orientation can be changed to the "forward seat position" and the "rearward seat position".
Further, in the vehicle seat 10, since the seat orientation can be changed only by the operation of tilting the pair of seat portions 32 in a predetermined direction with respect to the base portion 12, a continuous support surface for supporting the body of the occupant P can be formed by the plurality of cushion portions constituting the pair of seat portions 32. Thus, in the process of changing the seat orientation, it is possible to prevent a situation in which an unnecessary gap is formed between the support surface of the seat portion 32 and the base portion 12, and a part of the body of the occupant P is sandwiched between the seat portion 32 and the base portion 12.
In the present embodiment, as in the seat portion 32A shown in fig. 7, when one seat portion 32 is a cushion portion, the hip portion to the leg portion of the occupant P are supported by the seat portion 32. Further, as in the seat portion 32B shown in fig. 7, when the other seat portion 32 serves as a backrest portion, the back to head of the occupant P is supported by the seat portion. In this way, the head to the foot of the occupant P can be supported by the pair of seat portions, and the occupant P can be seated in a comfortable posture. As a result, the comfort of the occupant P during traveling can be improved.
In the present embodiment, since the lower cushion portion 34 and the intermediate cushion portion 36 are coupled by the 2 nd hinge portion 84 constituting the double hinge mechanism, the thickness of the lower cushion portion 34 and the intermediate cushion portion 36 can be absorbed by the 2 nd hinge portion 84, and both can be coupled so as to be relatively rotatable. Therefore, the thicknesses of the lower pad 46 and the intermediate pad 56 disposed in the lower cushion part 34 and the intermediate cushion part 36 can be sufficiently ensured. Accordingly, the lower cushion portion 34 and the intermediate cushion portion 36 of the seat portion 32, which are disposed at positions separated from the base portion 12, can stably support the body of the seated occupant P, and the occupant restraining force of the seat portion 32 can be increased.
In the present embodiment, by rotating the revolving frame 62 relative to the bottom frame 60 of the upper cushion 38, the feet of the occupant P can be supported by the bottom frame 60 at the footrest position of the upper cushion 38, and the head of the occupant P can be supported by the revolving frame 62 at the headrest position of the upper cushion 38. Thus, even when the seat orientation of the vehicle seat 10 is reversed and the forward seat position is changed to the rearward seat position, the upper cushion portion 38 can be distinguished from the head portion using the portion where the foot portion contacts, and the cleanness can be maintained. As a result, the convenience of the occupant P can be further improved.
In the present embodiment, the rotation operation among the lower buffer portion 34, the intermediate buffer portion 36, and the upper buffer portion 38 is performed using a plurality of shafts that rotate in the forward and reverse directions by receiving driving forces from a plurality of motors. Specifically, the lower cushion part 34 and the base part 12 are coupled by the 1 st hinge part 74, and when the 1 st motor 76 of the 1 st hinge part 74 is activated, the 1 st shaft 78 is rotated forward and backward to rotate the lower cushion part 34 with respect to the base part 12. The lower cushion portion 34 and the intermediate cushion portion 36 are coupled by the 2 nd hinge portion 84, and when the 2 nd motor 92 and the 3 rd motor 98 of the 2 nd hinge portion 84 are activated, the 2 nd shaft 94 and the 3 rd shaft 100 constituting the double hinge mechanism are rotated forward and backward. Then, the intermediate cushion portion 36 is rotated with respect to the lower cushion portion 34. Further, the intermediate buffer portion 36 and the upper buffer portion 38 are coupled by the 3 rd hinge portion 116, and when the 4 th motor 118 of the 3 rd hinge portion 116 is activated, the 4 th shaft 120 is rotated forward and backward, and the upper buffer portion 38 is rotated relative to the intermediate buffer portion 36.
According to the above configuration, when changing the seating posture, the movement of the lower cushion portion 34, the intermediate cushion portion 36, and the upper cushion portion 38 can be smoothly performed, and even when the seat shape is changed when the occupant P is seated on the vehicle seat 10, the discomfort given to the occupant P can be suppressed.
In the present embodiment, the vehicle seat 10 is configured to actuate the hinge mechanism 72 to be in a state of a selected mode among a plurality of modes stored in advance by the control of the ECU 140. Therefore, when the occupant P adjusts the sitting posture, it is only necessary to select any one of the plurality of modes, and therefore the sitting posture can be adjusted extremely easily.
< supplementary explanation of embodiment >
In the above embodiment, the 1 st hinge part 74 and the 3 rd hinge part 116 are single hinge mechanisms, but the present invention is not limited to this, and a double hinge mechanism may be employed.
In the above-described embodiment, the hinge mechanism 72 has the configuration including the 1 st motor 76 to the 5 th motor 130, but the present invention is not limited to this, and the hinge mechanism may be configured to be manually rotated using a manual adjustment lever or the like.
In the above embodiment, the pair of seat portions 32 is configured to include the lower cushion portion 34, the intermediate cushion portion 36, and the upper cushion portion 38, but the present invention is not limited thereto, and the upper cushion portion 38 of the above embodiment may be omitted from two or any one of the seat portions.
The present invention can be carried out with various modifications without departing from the scope of the present invention. It is needless to say that the claims of the present invention are not limited to the above embodiments.

Claims (6)

1. A vehicle seat is provided with:
a base fixed to a floor of a vehicle;
a pair of seat portions that are disposed so as to face each other when viewed from the seat width direction, are supported by the base portion so as to be tiltable between a horizontal position and an upright position, and have a plurality of cushion portions that are disposed in series and support the body of the occupant; and
and a hinge mechanism that attaches the pair of seat portions to the base portion so as to be tiltable, and that connects the plurality of cushion portions to each other so as to be pivotable about an axis extending in a seat width direction.
2. The vehicle seat according to claim 1, wherein,
the plurality of buffer portions include: a lower cushion part having one end supported by the base part so as to be tiltable relative to the base part, the lower cushion part being capable of supporting a lower part of a hip or a back of an occupant;
an intermediate cushion portion having one end rotatably supported by the other end of the lower cushion portion and capable of supporting an upper portion of a shin portion or a back portion of the occupant; and
and an upper cushion part having one end rotatably supported by the other end of the middle cushion part and capable of supporting a foot or a head of the occupant.
3. The vehicle seat according to claim 2, wherein,
the lower cushion section and the intermediate cushion section are rotatably connected by a double hinge mechanism in which one rotation shaft provided at the other end of the lower cushion section and another rotation shaft provided at the one end of the intermediate cushion section are connected via a link.
4. The vehicle seat according to claim 2, wherein,
the upper buffer portion includes: a plate-shaped bottom frame capable of supporting the feet of the passenger at the foot rest position, and a plate-shaped rotating frame capable of supporting the head of the passenger at the headrest position, and
the base frame and the revolving frame are coupled to each other so as to be pivotable about an axis in the seat width direction.
5. The vehicle seat according to claim 1, wherein,
the hinge mechanism includes: a plurality of motors as drive sources; and a plurality of shafts that are rotated in the forward and reverse directions by the driving force from the plurality of motors and are arranged with the seat width direction as the axial direction.
6. The vehicle seat according to claim 1, comprising:
a control device that actuates the hinge mechanism to be in a state of a selected mode among a plurality of modes stored in advance.
CN202010040403.4A 2019-01-15 2020-01-15 Vehicle seat Pending CN111434521A (en)

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